def take_integer(a,b):
    a = 10
    b = 20
    print('a=%s,b=%s'% (a,b))
    
def take_list(a,b):
    a[0] = 10
    b = ['a','b']
    print(a)
    print(b)

a=1
b=2    
take_integer(a,b)
print('a=%d,b=%d'% (a,b))

l1 = [1,2]
l2=[3,4]
take_list(l1, l2)
print(l1)
print(l2)
    